Reveals every registered scope on any DOM submit event.
Coarse-grained - affects every registered scope, every form. The
feature installs a capture-phase document listener that calls
registry.revealAll() on any submit anywhere in the document, even
when the submit fires from a form unrelated to the scope of interest.
Appropriate when the application treats every submit as a "show all
errors now" trigger.
For finer-grained reveals (per-form, per-flow), skip this feature and
call registry.reveal(name) from the consumer's submit handler
instead - the scope-name registration path stays available without
the global listener.